#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define rep(i, a, b) for (int i = (a); i <= (b); i++)
#define per(i, a, b) for (int i = (a); i >= (b); i--)
#define endl '\n'
const int N = 2e5 + 5;

int n, m;
int a[5], b[5];

int main() {
  ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  rep(i, 1, 4) cin >> a[i];
  rep(i, 1, 3) cin >> b[i];
  cout << *min_element(a + 1, a + 5) + *min_element(b + 1, b + 4);
  return 0;
}